Window-latch.



J. G. STANEGKY.

WINDOW LATCH.

APPLICATION FILED AUG. 30, 1912.

1,070,377, Patented Aug. 12, 1913.

Gu 2 W I l Iii;

5 L AM g 1 Il I m'fzzesses= fzweziz ozi- 67? MW Jzseph G. Siazzedf UNITED STATES PATENT OFFICE- JOSEPH or. STANECKY,.0F CHICAGO; ILLINoIs, .AssIGNoR on TWO-NINTHS TO JOSEPH SIPKA AND ONE-NINTHTO ALOIS cHvoJKA, BOTH or CHICAGO, ILLINOIS.

1 WINDOW-LATCH.

Specification of Letters'Patent.

Patented Aug. 12,1913.

Original application filed January 15, 1912, Serial No..6 71, 261. Dividedand this application filed. August 30, 1912. Serial No.;717,8 77.

To all whom it may concern Be it known that I, JOSEPHGl .S'rANnoKY, a citizen of the United States, and a resident ofthe city of Chicago, county of Cook, and. State ofIllinois, have invented certain new:

and useful Improvements in -Window- Latches, of which the following is a specification.

My invent-ion relates to improvements in windows and more particularly to latching means therefor, the present invention being a division of my prior application for patent for window construction, filed January 15th, 1912, Serial No. 671,261.

The object of the present invention is to provide a latch for a window which is of simple construction and efficient in operation.

The invention consists in the combinations and arrangements of parts hereinafter described and claimed.

The invention will be best understood by reference to the accompanying drawing forming a part of this specification, and in which,

Figure 1 is an interior elevation of a window embodying my invention, and Fig. 2, a section of the same taken on line ww of Fig. 1.

The preferred form of construction as illustrated in the drawing comprises a suitable window frame 1 and upper and lower similar sashes 2 mounted to swing therein. Each of said sashes 2 is provided in its free swinging edge with a chamber 3 which extends substantially the full height of the sash and is provided at its upper and lower ends with openings 1 positioned centrally in the edge of the sash and registering with a latching groove 5 provided in the window frame. A pair of latching bell-crank levers is pivotally'mounted in each of the chambers 3. These levers are provided with comparatively long arms 6 arranged substantially parallel with the edge of the corresponding sash and provided with latching noses 7 adapted to project through openings 4 and engage the corresponding groove 5, as indicated. The other arms 8 of these latching levers are comparatively short and are arranged adjacent and substantially parallel to each other, as indicated in Fig. 1. The arms 8 are connected together by means of a tension spring 9 which tends to press arms Stogethen and thus to retract. noses -7 'from-= engagement Wlthuthe corresponding groove 5. A cam member 10 is arranged be- ;tween eachpair of arms. 8 and ismade oblong in shape, as shown, so that when .turnedto one position 1t Wlll force sald arms apart and thus project noses 7 into engagement with the corresponding groove 5, but when turned to a position at right angles to this first mentioned position to permit spring 9 to draw arms 8 toward each other and thus retract noses 7 to free the swinging edge of the sash and permit swinging thereof. Each of the cam members 10 is provided with an outwardly projecting stem 11 and an operating handle 12, as will be understood readily.

By this arrangement, it will be observed, that when cam member 10 is turned to the position illustrated in full lines in Fig. l, noses 7 will be forced outwardly through openings 4 into locking engagement with groove 5, but that when said cam member 10 is turned to the position indicated by dotted lines in Fig. 1, spring 9 will draw arms 8 toward each other and thus retract noses 7 to permit free swinging of the corresponding sash. This constitutes a simple and efficient means for latching and unlatching the sash and one which is especially useful, where the sashes are also mounted to slide vertically. It will be observed that the specific form of latching levers illustrated, and the specific arrangement thereof, constitutes a construction, in which the latching and unlatching operation will be performed very quickly, and in which the free edge of the sash is locked at widely separated points, this latter feature being especially advantageous when used in conjunction with sashes that slide vertically.

lVhile I have illustrated and described the preferred form of construction for, carrying my invention into efi'ect, this is capable of variation and modification without departing from the spirit of the invention. I, therefore, do not wish to be limited to the precise details of construction set forth, but desire to avail myself of such variations and modifications as come within the scope of the appended claim.

Having described my invention What I claim as new and desire to secure by Letters Patent is:

The combination in a window, of a swinging sash in said frame having a chamber formed therein, and a latching groove in said frame opposite the free edge of said frame, the said sash having two widely separated openings communicating with the said chamber and registering with said frame groove; oppositely disposed bell crank levers pivoted adjacent the free edge of said sash and having arms projecting laterally within the said chamber; and arms extending upwardly and outwardly and being adapted to pass through the chamber openings and into said frame groove; a cam member arranged between the laterally projecting arms and adapted 'to actuate the 15 upper arms into engagement with the frame groove; and springs connecting the laterally projecting arms for normally tensioning the same together, substantially as described.

In testimony whereof I have signed my 20 name to this specification in the presence of two subscribing witnesses.

JOSEPH G. STANEGKY.

Witnesses:

MARIE CALLAGHAN, B. G. RICHARDS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

